UNIT 3 : Corrosion Q1) Explain any five factors affecting corrosion. Position in Galvanic Series: More active metals corrode faster when in electrical contact in a conducting medium. Relative Areas of Anode and Cathode: Corrosion rate depends on the ratio of cathodic to anodic area. a larger anodic area minimizes corrosion. Purity of Metal: Impurities create galvanic cells, leading to corrosion. Temperature: Higher temperatures speed up both atmospheric and electrochemical corrosion. Conductivity of Corroding Medium: The electrical conductivity of the medium affects the rate of electrochemical corrosion. Higher conductivity results in faster corrosion. Q2) Define Hot dipping. Explain coating method with neat labelled diagram to protect metal from corrosion and give applications. Hot Dipping: Hot dipping is a method that in...
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